margin figures errors in pdf when generating plots

If a plot is programmatically generated, it produces an error: LaTeX Error: Not in outer par mode when rendering. Here is a simple example:

---
format: 
  pdf:
    execute:
      echo: false
---

This is some text

::: {.column-margin}

#### Subtitle

```{r}
#| label: fig-test
#| fig-cap: Test captions
#| warning: false
library(tidyverse)
data(iris)
iris %>% ggplot(aes(Sepal.Length, Sepal.Width, color = Species)) + geom_point()
```
:::

Reproduce the supplied example with Quarto's PDF format and R execution, then inspect the generated LaTeX around the column-margin figure. Compare it with a plot outside the margin to isolate the rendering boundary; done means the example renders without the reported LaTeX error and preserves the caption.